In the first place why would you gamble chasing for money? This is the reason why many people lose money in gambling. They play for profit not for entertainment. Sure it's really satisfying when you win some amounts in gambling but that wouldn't happen always like you expect.

For choosing what website to gamble, always choose a website that is already trusted by many people and aslo has good reviews over the internet. From that you can already know if that website is provably fair.